Experimental methods exploit a particular physical phenomenon to make measurements and hence only certain information that can be recorded by an experimental technique. The course introduces the physical principle used by various experimental techniques and also provides a guideline to select an experimental technique for a given application. The role of analytical, numerical and experimental methods in solving a problem in solid mechanics is discussed. Stress and strain at a point is discussed in most courses on solid mechanics but little attention is paid on the variation of these quantities over the field of the model. Attention is drawn on the richness of whole field information provided by most of the optical techniques.

INTENDED AUDIENCEIntended for a wide section of audience from Industry, Research organizations, Engineering College students and Faculty, Consultants in Mechanical, Civil, Aerospace, Naval architecture and Engineering Design Departments.

PRE-REQUISITESStrength of Materials/Introduction to Mechanics of Solids

INDUSTRIES THAT WILL RECOGNIZE THIS COURSEDRDO Labs, ISRO, HAL, BHEL R&D, L&T, TATA motors, Ashok Leyland, TVS group, Murugappa Group, Mahindra &Mahindra etc. Apart from experimental personnel, managers and groups involved with Numerical simulation are also encouraged to take this course. It would help them in validation of the numerical models. Further the administrators can appreciate the need of funds for setting up requisite experimental facilities and also the need for training experimental personnel.

COURSE LAYOUT

Module

Title

1.1

Introduction to Stress Analysis – Analytical and Numerical Approaches

1.2

Introduction to Stress Analysis: Experimental Approaches

1.3

Optical Methods Work as Optical Computers

1.4

Basic information provided by various experimental methods

1.5

Visual appreciation of field information: Part-1

1.6

Visual Appreciation of Field Information - Part-2

1.7

Visual Appreciation of Field Information - Part-3

2.1

Visual Appreciation of Field Information - Part-4

2.2

Visual Appreciation of Field Information - Part-5

2.3

Completeness of a Numerical Solution

2.4

Principle of Strain Gauges

2.5

Overview of Strain Gauge Measurements

2.6

Elegance of Photoelasticity

2.7

Introduction to Photoelasticity

3.1

Principles of Moiré

3.2

Introduction to Moiré

3.3

Introduction toBrittle Coatings

3.4

Introduction toHolography

3.5

Introduction toHologram Interferometry

3.6

Introduction toDouble exposure hologram interferometry

3.7

Introduction toSpeckle Methods

3.8

Introduction to Speckle Interferometry Techniques

3.9

Introduction to TSA and DIC

4.1

Introduction to Caustics

4.2

Introduction to Coherent Gradient Sensor

4.3

Naming of Experimental Methods

4.4

Fringe Patterns - Richness of Qualitative Information

4.5

Key technologies that have influenced Experimental Mechanics

4.6

Multiscale analysis and trends in experimental mechanics

4.7

Selection of an experimental technique- Part I

4.8

Selection of an experimental technique- Part 2

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Course Syllabus & Schedule

Faculty

K Ramesh

Prof. K. Ramesh is currently a Senior Professor at the Department of Applied Mechanics, IIT Madras; as its Chairman during (2005-2009) and formerly a Professor at the Department of Mechanical Engineering, IIT Kanpur. He received his undergraduate degree in Mechanical Engineering from the Regional Engineering College, Trichy (now NIT, Trichy), Postgraduate degree from the Indian Institute of Science, Bangalore and the Doctoral Degree from the Indian Institute of Technology Madras.

He has made significant contributions to the advancement of Digital Photoelasticity. This has resulted in a Monograph on Digital Photoelasticity - Advanced Techniques and Applications (2000), Springer, a chapter on Photoelasticity in the Springer Handbook of Experimental Solid Mechanics (2009) and a chapter on Digital Photoelasticity in the book on Digital Optical Measurement Techniques and Applications (2015), Artech House London. He has over 170 publications to date of which two have been reproduced in the Milestone Series of SPIE. His research has been funded by organizations such as ARDB, ISRO, DST, and NSF. He received the Zandman award for the year 2012, the only Indian to receive it since its inception in1989, instituted by the Society for Experimental Mechanics, USA for his outstanding research contributions in applications utilizing photoelastic coatings.